Add. Use models if needed.
PLZ HELP I WILL GIVE BRAINLIEST!!
PLZ EXPLAIN

Step-by-step explanation:

1. 3x+5+4x-1

7x+4

2. 5x-3-2x+1

3x-2

3. -7x+4-5x-12

-12x-8

4. 4x-10-5x-2

-x-12

plz mark brainliest

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

just sum

10 + 10 = 20